schoop



2 Sheets-Sheet 1.

Patented Aug. 12, 1890.

P. SCHOOP.

smw@

SECONDARY BATTERY.

c oe

(No Model.)

J1. 1. 1' JZ/ X www (No Model.) 2 Sheets-Sheet 2.

P. SCHOOP.

SECONDARY BATrEPnZ. I No. 434,093. Patented Aug. 12, 1890. 8. g5/.9. m

ma; Q QLJQMMW, xmk

PATENT OFFICE.

PAUL scHooP, or ZURICH, SWITZERLAND.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 434,093, dated August "12, 1890. Application Bled March. 14, 1890. Serial N0. 343,829. (No model.)

To all whom, t may concern:

Be it known thatl I, PAUL SCHOOP, a citizen of the Republic of Switzerland, residing at Zurich, in the Republic of Switzerland, have invented a certain .new and useful Improvementin Electrodes for Electric Batteries, of which the followingis a full, clear, and exact specification. l

My invention relates to storage or secondary batteries, and hasfor its object to Yconstruct a cheap, simple, and eective'battery.

My invention is illustrated in the accompanying drawings, wherein- Figure l is a plan view of a cell. Fig; 2 is a longitudinal section.` Fig' is adetail of one plate, and Fig. 4 of the other. a modification of the plate; Fig. 6, a longitudinal section of a cell containing such plates. Figs. 7, 8, 9, and l0 are modifications. Fig. ll is a plan view of a cell with a diierent method of connecting. Fig. 12 is a crosssection of the same on the line Y Y; Fig. 13, a portion of a longitudinal section on the line Z Z of Fig. 1l and the line X X' of Fig. 12.

Like parts are indicated by the same letter in all the figures.

A is the cell-body, of any suitable materia-l. B l5 are arms from a central stem C and pro-` 'jecting into the side bars D D of ebonite. .Each of these arms carries a series of disks E E, which disks, arms and stern, and side bars constitute a plate-for example, a positive plate. The several plates of this character in the cell are connected at the upper endsof their central stems by the connector F. G G are a series of transverse rods connected together at their extremities by the stems Il H. -The stems II II are connected together' on each side by the strips J J, which strips curve toward the front and terminate in a strip K with a conductor L. 0n the rods or crosspe'ces G G are the disks M M, similar to the disks on the rods or arms B l. The use and operationof these parts will readily be understood. The plates consist, substantially as shown, of a series of bars or rods carrying eaclra series of disks of small dimensions, andthe plates are suitably connected in the .usual manuel'. The plates having the lateral 'connecting-bars H H rest nponstrips, and are thus connected, while the plates having the central stems are connected by thc strips en- Fig. 5 isA gaging such central stems at their upper ends in any desirable manner.

The modifications shown in Figs. 5` and 6 are' as follows: he frame N is provided with the central ring O\and the radial bars PP-, upon which are laced the similar disks` RR.' This is the struc lure for plates which are connected through the middle by means of the rod S, concentric with which rod are series of similar plates, except that intervening between the rod and each of them is a collar of insulating material T. The plates areconnected up, alternate platesinto one group and the remaining plates into another, -one group beingv connected by the rod S andthe other group, for example, by the stripsU, of which strips there maybe one or more. rTheSe .plates are kept from contact with each other by the interposed pieces V V. i

Figs. 7, 8, and 9 represent modifications of the device, but all retaining substantially the same features as those hereinbefore mentioned-that is to say, allconstructed seras to present a thin laterally-extending metallic plate or plates in connection with a supportmg, stem or portion. Fig. l0 is adetailof a central stern having flanges, as it were. Fig. l l is aplan view ofl anelem'ent containing such devices as that last illustrated. Fig. l2l isa cross-section of Fig. 1l through the line Y Y, and Fig. 13 is a portion of a longitudinal section on the line Z Z of Fig. 11 and X X of Fig. 12. Like parts are indicated by the fame letter in these figures. the lateral longitudinal flanges WV W. W2 is a cell. W3 W3 are strips along the bottom of such cell, terminating in the conductor VV* at Vone end. W W5 are strips across the top 'of the cell, terminating in the conducto-1' WVG. W7 W7 are transverse bars, to which one set of rods NV W are rigidly secured above, and WS-is an insulation in the bottom of thecell,

- adapted to receive the ends ot' the rods iV W,

and thus retain them out of contact with each other. W9 is similar-insulating material at the top of -the cell to keep the upper extremities ot the rods W W apart. Each alternate set of 'rods W W projects through the upper IOO insulation W, and makes contact withy the cross-bars v "l Vi' 7, which in turn are. in contact with the .conductors T5 YV,- leading to the conductor W, while the other set ofrods 'W W is rigidly secured to the upper` insulation W and projects into apertures in the lower insulation W8, so as to be brought into contact with the cross conduetingstrips W1 'W0, which lie across the base of the cell and correspond to the upper cross-stri p W T. These cond ucting-strips 1 "1" are connected with the conductors lV W3 and thence with theconductor W 4. Thus each plate virtually consists of a cross-piece, either upper or lower, and a series of rods with flanges, and one setof plates is connected with one conductor above and one 'with the opposite conductor below. The use and operation of this device, as shown in these figures, are of course apparent Without further description, the use and operation bein;T the same as that ofl other similar devices.

This invention has reference simply to the form of plates, and the disks or flanges or laterally-projeetinf:r thin portions'or the strips might be ot' any proper material, and might be continuous with or mechanically or otherwise be applied tothe stems, rods, or arms which supporty them. It is well known that in the large plates, as they are commonly constructed, `@great difficulty is experienced on ae count of bucklingI and on account of the 'un'- equal expansion' of such plates in the different directions incidentto theirpcculiar shapes and 'their large masses. 'l`lie form of device which I have illustrated is calculated to obviate these dillieult-ies by furnishing' the active plate or portion of the platl` with a strong and lirm supporting stem or rod, while the active plate itself isbroken up intea series of small or fragmentary plates not likely to be injured or deformed by the unequal expansion or the contraction thereof.

The flanges on the rods shown in Figs. 8, 1U, and l2, it will be observed, are simply plates parallel with the which they form part or to which they are secured, and they might be east upon such rods or otherwise secured to them. The result is the same as that produced, for example, in Fig. 4 or 3, Where a series of thin plates parallel to the length of the rods is plunged into the liquid.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. As a plate for a storage-lmttery, a central rod with a series of arms tl1ereon','and a series of thin plates secured on such arms and lying substantially parallel with the axis of the roll.

2. lIn a storage-battery, the'combination of a series of plates connected each alternate one above with-one conductor and the other one below with one conductor, each of said plates composed of a series of arms or rods, and a quantity of small plates having active surfaces thereon.

Chicago, lllinois, March l1, 1890.

PAUL SCUOOP.

Witnesses:

FRANCIS W. PARKER, Cnnns'rn P. CHAPMAN.

length of the rods of 

